/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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 */
package org.hisp.dhis.sqlview;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.junit.jupiter.api.Test;

/**
 * @author Lars Helge Overland
 */
class SqlViewUtilsTest {

  @Test
  void testGetVariables() {
    String sql =
        "select * from dataelement where name = '${de_name}' and aggregationType = '${de_aggregation_type}'";
    Set<String> variables = SqlViewUtils.getVariables(sql);
    assertEquals(2, variables.size());
    assertTrue(variables.contains("de_name"));
    assertTrue(variables.contains("de_aggregation_type"));
  }

  @Test
  void testSubsituteSql() {
    Map<String, String> variables = new HashMap<>();
    variables.put("level", "4");
    variables.put("id", "abc");
    String sql = "select ${level},* from datavalue where level=${level} and id='${id}'";
    String expected = "select 4,* from datavalue where level=4 and id='abc'";
    String actual = SqlViewUtils.substituteSqlVariables(sql, variables);
    assertEquals(expected, actual);
  }

  @Test
  void testSubsituteSqlMalicious() {
    Map<String, String> variables = new HashMap<>();
    variables.put("level", "; delete from datavalue;");
    String sql = "select * from datavalue where level=${level}";
    String expected = "select * from datavalue where level=${level}";
    String actual = SqlViewUtils.substituteSqlVariables(sql, variables);
    assertEquals(expected, actual);
  }

  @Test
  void testSubsituteSqlVariable() {
    String sql = "select ${level},* from datavalue where level=${level} and id='${id}'";
    String expected = "select 4,* from datavalue where level=4 and id='${id}'";
    String actual = SqlViewUtils.substituteSqlVariable(sql, "level", "4");
    assertEquals(expected, actual);
  }

  @Test
  void testRemoveQuerySeparator() {
    String sql = "select * from datavalue; delete from datavalue;";
    String expected = "select * from datavalue delete from datavalue";
    String actual = SqlViewUtils.removeQuerySeparator(sql);
    assertEquals(expected, actual);
  }
}
